Feature Overview

The PGW Support of HSI Non-RAS Mode feature of the Cisco Media Gateway Controller (MGC) software runs on the Cisco PGW 2200 and Cisco H.323 Signaling Interface (HSI). It enables service providers to create a simplified network without a gatekeeper, for networks that do not require gatekeeper features, such as security.

In Non-RAS mode, the Cisco PGW converts called numbers into one or two IP addresses in the dial plan to support load sharing over multiple HSIs, which supports H.323 endpoints that have multiple IP addresses. With such support, when the primary IP address does not work, a subsequent attempt is made with the alternative IP address for the same endpoint.

If the Cisco PGW sends an IP address to the HSI over E-ISUP, the HSI sends a SETUP directly to the endpoint. In addition, the Cisco PGW stores the H.323 destination IP address in the Cisco PGW Call Detail Record (CDR).

PGW Support of HSI Non-RAS Mode enables a Cisco PGW 2200 to be deployed with a connected Cisco HSI without a gatekeeper in networks that do not require admission or location of the H.323 endpoint. PGW Support of HSI Non-RAS Mode is also used when selection of the endpoint does not benefit from H.323 mechanisms such as Resource Availability Indication (RAI). Examples of such deployments include Cisco CallManager (CCM), H.323 ITS, or cases in which an H.323 gateway provides the only connection to a PBX.

CDR Tag 4236

CDR tag 4236 supports non-RAS mode by storing the H.323 destination IP address. This tag is available only when the call uses the non-RAS feature.

The information in Table 1 describes the H323 destination tag created for Non-RAS mode.

Table 1 H323 Destination Description Form

Name: H323 DESTINATION

Tag: 4236

Source: MDL

Description/Purpose: Identifies the H323 Destination Address associated with the terminal trunk group or sigPath.

Format: IA5

Length in Octets: 1 to 29

Data Value:

Content:

[IP Address]:[Port]

Example: 64.104.173.123:1720

ANSI/ITU Variations: None.

Extended Data Value: No extended value.

General Information: This destination IP address is the H323 address used in Non-RAS mode. This IP address is the same as the H323PriAddr:H323PriPort or H323AltAddr:H323AltPort that is defined in the sigPath/Trunkgroup property.

MGC Release: Release 9.7.(1) and later.

Answered (1010)

Deselected (1020)

Aborted (1030)

Release (1040)

Interrupted (1050)

Ongoing (1060)

Maintenance (1070)

External DB (1080)

End of Call (1110)

y

N

y

N

N

N

N

N

Y

Benefits

The Non-RAS mode of operation enables you to deploy the Cisco PGW 2200 and the Cisco HSI without a gatekeeper. Such a deployment establishes a simplified network that does not require admission, location of the H.323 endpoint, or selection of an endpoint that does not benefit from H.323 mechanisms such as RAI. Examples are CCM, H.323 ITS, and an H.323 gateway that contains the only connection to a PBX.

Restrictions

A single Cisco HSI cannot operate in both RAS and Non-RAS modes. If a network requires both modes of operation, the network must have multiple Cisco HSIs.

Related Documents

This document contains information that is related to this feature. The documents that contain additional information related to the Cisco Media Gateway Controller (MGC) are at the following url:

Supported Platforms

The hardware platforms supported for the Cisco MGC software, Release 9.7(3), are described in the Cisco Media Gateway Controller Hardware Installation Guide.

The hardware platforms supported for the Cisco HSI software, Release 4.2, are described in the Cisco H.323 Signaling Interface User Guide.

Supported Standards, MIBs, and RFCs

No new standards, MIBs, or RFCs are supported by the PGW Support of HSI Non-RAS Mode feature.

Prerequisites

To implement the Non-RAS mode of operation, the feature must be enabled on both the Cisco PGW 2200 and the Cisco HSI.

The Cisco PGW 2200 must be running Cisco MGC software Release 9.7(3). Prerequisites for this release can be found in the Release Notes for the Cisco Media Gateway Controller Software Release Cisco MGC Software Release 9.7(3) at:

MGC Configuration

To enable NON-RAS mode on the Media Gateway Controller, you must configure the sigPath/Trunkgroup property identified as H323Destination. Non-RAS mode supports configuring two destination addresses, a primary IP address and an alternative IP address.

Note The sigPath property H323adjunct link must be set to 1 to indicate the EISUP sigPath is between the PGW 2200 and the HSI.

mml> prov-add:SIGSVCPROP:name="eisupsvc1",h323adjunctlink="1"

Configuring a Primary Destination Address

In the following MML command example, a primary destination IP address is configured, but no alternative address. In this example, a port number is provided, the default port 1720.

Configuring Gatekeeper Mode for the Trunk Group

In the following MML command example, the gatekeeper mode is configured for the trunk group:

mml> prov-add:TRNKGRPPROP:name="111",H323Destination="0.0.0.0"

HSI Configuration

For the Cisco HSI software configuration required to support the Non-RAS Mode of operation, refer to the Cisco H.323 Signaling Interface User Guide, for Release 4.2.

To enable Non-RAS mode on the Cisco HSI, enter the following MML command:

prov-add:name=RAS,manualRAS

Troubleshooting Tips

For information on troubleshooting the rest of the Cisco MGC software, refer to the Cisco Media Gateway Controller Software Release 9 Operations, Maintenance, and Troubleshooting Guide.

Configuration Examples

To enable Non-RAS mode, one must configure new properties identified as sigPath/Trunkgroup. Non-RAS mode supports configuring two destination addresses, a primary IP address and an alternative IP address.

Note The sigPath property H323adjunct link must be set to 1 to indicate the EISUP sigPath is between the PGW 2200 and the HSI.

mml> prov-add:SIGSVCPROP:name="eisupsvc1",h323adjunctlink="1"

In the following MML command example, two IP addresses are configured. The primary destination IP address is 192.168.80.2:1720; the alternative destination IP address is 192.168.80.3.

Reference Information

New and Modified Properties

The property in this section is used for the PGW Support of HSI Non-RAS Mode feature. For information on other properties for the Cisco MGC software, refer to the Cisco Media Gateway Controller Software Release 9 Provisioning Guide.

Table 2 lists the parent objects for the property involved in this feature.

Table 2 Software Properties Related to this Feature

Property Name

Parent Object

AVM

DPNSS

EISUP

IOCC

ISDNPRI

MGCP

RLM

SESSION

SGCP

SS7-ANSI

SS7-China

SS7-ITU

SS7-Japan

SS7-UK

TALI-IOCC

TCAPOverIP

TrunkGroup

VSI

H323Destination

X

X

Table 3 lists the new and modified properties used for the PGW Support of HSI Non-RAS Mode feature.

Table 3 New and Modified Properties Used for the Support of Non-RAS Mode Feature

Property

Definition

H323Destination

Identifies the primary and alternative IP Address and Port of the H323 destination.

Valid Values: xxx.xxx.xxx.xxx[:port][xxx.xxx.xxx.xxx:port]—the primary and the alternative IP address and port of the H323 destination.

Default value: NULL—indicates the Non-RAS feature is inactive on this trunkgroup.

Property domain: Sigpath, Trunkgroup

Dynamically reconfigurable: Yes

This property is added in software Release 9.7(3).

Obtaining Documentation, Obtaining Support, and Security Guidelines

For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Glossary

Table 4 lists the expansion of acronyms and technical terms used in this feature module.

Table 4 Acronym Expansions

Acronym

Expansion

CCM

Cisco CallManager

CDB

Call Detail Block

CDR

Call Detail Record

HSI

H.323 Signaling Interface

MGC

Media Gateway Controller

PGW

PSTN Gateway

PSTN

public switched telephone network

RAS

Registration, Admission and Status

RAI

Resource Availability Indication

This document is to be used in conjunction with the documents listed in the Related Documents section.

Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.